N, P and Si in Oceans - non-siliceous phytoplankton vs siliceous phytoplankton

http://www.nies.go.jp/gaiyo/bunya/aquaterra-e.html

Effects of Changes in Nutrient Ratios of River Water on Marine Ecosystems

As human activities increase, the inflowing of nitrogen (N) and phosphorus (P) into oceans is also augmented. On the other hand, the amount of silicon (Si) that flows into oceans tends to decrease since silicon settles and gets trapped in still bodies of water such as dam reservoirs. It is therefore likely that, in these conditions, non-siliceous phytoplankton (including the harmful red tide algae) can thrive better than siliceous phytoplankton, which are mostly harmless. Our research aims to clarify these ecological changes through ocean observation by ferry and ecosystem modeling.

http://db.cger.nies.go.jp/gem/sea/SE_Pacific/me.html

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This study and approach confirms our views that Diatoms (siliceous phytoplankton) are good and Green, Blue Green Algae and Red Tides (non-siliceous phytoplankton)are not useful or are even harmful.

Green Algae in an Aquarium Tank

The dissolved oxygen level is 41.5 mg / litre at 2 pm in the afternoon.
This is supersaturation of over 460 % of the saturation limit of 9 mg / litre.

Algae Biodiesel

A few days ago we received confirmation that Nualgi boosts growth of Green Algae too.
We had been using Nualgi for Diatom algae only in the past.

However the new development opens up more vistas for Nualgi - since green algae is a source of biodiesel.

In natural ponds where both Diatoms and Green Algae are present we found that Nualgi causes a bloom of diatoms and not of green algae. But if used in ponds in which only Green Algae are present then even these would bloom.